TY  - CONF
AU  - Matović, Branko
AU  - Babić, Biljana M.
AU  - Volceanov, E.
AU  - Bošković, Snežana B.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6887
AB  - Nanocrystalline Boron carbide powder was synthesized by simple sol-gel polycondenzation of resorcinol and formaldehyde in present of boric acid, followed by freeze drying. Pyrolysis and subsequent heat treatment of these cryogels result in boron carbide materials. Characterization by nitrogen adsorption showed that precomposite cryogels and the boron carbide powders were micro and mesoporous materials with high surface areas. Materials have been analyzed by means of X-ray diffraction and electron microscopy investigations. The Rietveld refinement was employed to get the structural information of the synthesized powder.
T1  - Low-Temperature Synthetic Route of Boron Carbide Powders
SP  - 375
EP  - 378
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6887
ER  - 

@conference{
author = "Matović, Branko and Babić, Biljana M. and Volceanov, E. and Bošković, Snežana B.",
year = "2010",
abstract = "Nanocrystalline Boron carbide powder was synthesized by simple sol-gel polycondenzation of resorcinol and formaldehyde in present of boric acid, followed by freeze drying. Pyrolysis and subsequent heat treatment of these cryogels result in boron carbide materials. Characterization by nitrogen adsorption showed that precomposite cryogels and the boron carbide powders were micro and mesoporous materials with high surface areas. Materials have been analyzed by means of X-ray diffraction and electron microscopy investigations. The Rietveld refinement was employed to get the structural information of the synthesized powder.",
title = "Low-Temperature Synthetic Route of Boron Carbide Powders",
pages = "375-378",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6887"
}

Matović, B., Babić, B. M., Volceanov, E.,& Bošković, S. B.. (2010). Low-Temperature Synthetic Route of Boron Carbide Powders. , 375-378.
https://hdl.handle.net/21.15107/rcub_vinar_6887

Matović B, Babić BM, Volceanov E, Bošković SB. Low-Temperature Synthetic Route of Boron Carbide Powders. 2010;:375-378.
https://hdl.handle.net/21.15107/rcub_vinar_6887 .

Matović, Branko, Babić, Biljana M., Volceanov, E., Bošković, Snežana B., "Low-Temperature Synthetic Route of Boron Carbide Powders" (2010):375-378,
https://hdl.handle.net/21.15107/rcub_vinar_6887 .

TY  - JOUR
AU  - Matović, Branko
AU  - Šaponjić, Aleksandra
AU  - Pošarac, Milica B.
AU  - Devečerski, Aleksandar
AU  - Radosavljević-Mihajlović, Ana S.
AU  - Volceanov, E.
AU  - Bošković, Snežana B.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6749
AB  - The possibility of using Mg-exchanged zeolite as additive for densification of Si3N4 ceramic was studied. The zeolitic precursor was previously heated at 800 degrees C to obtain an amorphous powder with a composition corresponding to MgO center dot Al2O3-nSiO(2). The powder was mixed with Si3N4 and the sintering additive was homogenized by attrition milling in the presence of isopropanol and finally compacted by cold isostatic pressure. Pushrod dilatometry was used to measure the shrinkage behaviour of green bodies under a nitrogen atmosphere from room temperature to 1500 degrees C. The chemical reactions and phase evolution during pressureless sintering were also followed by means of X-ray and dilatometric analysis. Results show that the first liquid forms as low as 1070 degrees C, sharing in a significant reduction of sintering temperature. The final phase composition obtained at 1500 degrees C consist of crystalline alpha-Si3N4 phase which is emended in oxynitride glassy phase The results show that the Mg-exchanged zeolite is a very effective low-temperature sintering additive for silicon nitride.
T2  - Journal of Optoelectronics and Advanced Materials
T1  - Sintering of silicon nitride with Mg-exchange zeolite additive
VL  - 10
IS  - 4
SP  - 880
EP  - 882
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6749
ER  - 

@article{
author = "Matović, Branko and Šaponjić, Aleksandra and Pošarac, Milica B. and Devečerski, Aleksandar and Radosavljević-Mihajlović, Ana S. and Volceanov, E. and Bošković, Snežana B.",
year = "2008",
abstract = "The possibility of using Mg-exchanged zeolite as additive for densification of Si3N4 ceramic was studied. The zeolitic precursor was previously heated at 800 degrees C to obtain an amorphous powder with a composition corresponding to MgO center dot Al2O3-nSiO(2). The powder was mixed with Si3N4 and the sintering additive was homogenized by attrition milling in the presence of isopropanol and finally compacted by cold isostatic pressure. Pushrod dilatometry was used to measure the shrinkage behaviour of green bodies under a nitrogen atmosphere from room temperature to 1500 degrees C. The chemical reactions and phase evolution during pressureless sintering were also followed by means of X-ray and dilatometric analysis. Results show that the first liquid forms as low as 1070 degrees C, sharing in a significant reduction of sintering temperature. The final phase composition obtained at 1500 degrees C consist of crystalline alpha-Si3N4 phase which is emended in oxynitride glassy phase The results show that the Mg-exchanged zeolite is a very effective low-temperature sintering additive for silicon nitride.",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Sintering of silicon nitride with Mg-exchange zeolite additive",
volume = "10",
number = "4",
pages = "880-882",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6749"
}

Matović, B., Šaponjić, A., Pošarac, M. B., Devečerski, A., Radosavljević-Mihajlović, A. S., Volceanov, E.,& Bošković, S. B.. (2008). Sintering of silicon nitride with Mg-exchange zeolite additive. in Journal of Optoelectronics and Advanced Materials, 10(4), 880-882.
https://hdl.handle.net/21.15107/rcub_vinar_6749

Matović B, Šaponjić A, Pošarac MB, Devečerski A, Radosavljević-Mihajlović AS, Volceanov E, Bošković SB. Sintering of silicon nitride with Mg-exchange zeolite additive. in Journal of Optoelectronics and Advanced Materials. 2008;10(4):880-882.
https://hdl.handle.net/21.15107/rcub_vinar_6749 .

Matović, Branko, Šaponjić, Aleksandra, Pošarac, Milica B., Devečerski, Aleksandar, Radosavljević-Mihajlović, Ana S., Volceanov, E., Bošković, Snežana B., "Sintering of silicon nitride with Mg-exchange zeolite additive" in Journal of Optoelectronics and Advanced Materials, 10, no. 4 (2008):880-882,
https://hdl.handle.net/21.15107/rcub_vinar_6749 .

TY  - JOUR
AU  - Matović, Branko
AU  - Egelja, Adela
AU  - Babić, Biljana M.
AU  - Gulicovski, Jelena J.
AU  - Volceanov, E.
AU  - Bošković, Snežana B.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3401
AB  - Highly porous SiC ceramics with a wood like structure were prepared from premineralized wood template through tetraethyl orthosilicate (TEOS) infiltration. The TEOS was first decomposed to SiO2 and then in situ reaction between silica and carbon template took place in the cellular wall at high sintering temperature. The morphology of resulting porous SiC ceramics have been investigated by scanning electron microscopy (SEM/EDX) and X-ray diffraction (XRD). Experimental results show that the biomorphic cellular morphology of wood is remained in the porous SiC ceramics with high precision that consist of beta-SiC phase.
T2  - Journal of Optoelectronics and Advanced Materials
T1  - The synthesis and microstructure of morphogenetic SiC ceramics
VL  - 10
IS  - 3
SP  - 549
EP  - 553
UR  - https://hdl.handle.net/21.15107/rcub_vinar_3401
ER  - 

@article{
author = "Matović, Branko and Egelja, Adela and Babić, Biljana M. and Gulicovski, Jelena J. and Volceanov, E. and Bošković, Snežana B.",
year = "2008",
abstract = "Highly porous SiC ceramics with a wood like structure were prepared from premineralized wood template through tetraethyl orthosilicate (TEOS) infiltration. The TEOS was first decomposed to SiO2 and then in situ reaction between silica and carbon template took place in the cellular wall at high sintering temperature. The morphology of resulting porous SiC ceramics have been investigated by scanning electron microscopy (SEM/EDX) and X-ray diffraction (XRD). Experimental results show that the biomorphic cellular morphology of wood is remained in the porous SiC ceramics with high precision that consist of beta-SiC phase.",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "The synthesis and microstructure of morphogenetic SiC ceramics",
volume = "10",
number = "3",
pages = "549-553",
url = "https://hdl.handle.net/21.15107/rcub_vinar_3401"
}

Matović, B., Egelja, A., Babić, B. M., Gulicovski, J. J., Volceanov, E.,& Bošković, S. B.. (2008). The synthesis and microstructure of morphogenetic SiC ceramics. in Journal of Optoelectronics and Advanced Materials, 10(3), 549-553.
https://hdl.handle.net/21.15107/rcub_vinar_3401

Matović B, Egelja A, Babić BM, Gulicovski JJ, Volceanov E, Bošković SB. The synthesis and microstructure of morphogenetic SiC ceramics. in Journal of Optoelectronics and Advanced Materials. 2008;10(3):549-553.
https://hdl.handle.net/21.15107/rcub_vinar_3401 .

Matović, Branko, Egelja, Adela, Babić, Biljana M., Gulicovski, Jelena J., Volceanov, E., Bošković, Snežana B., "The synthesis and microstructure of morphogenetic SiC ceramics" in Journal of Optoelectronics and Advanced Materials, 10, no. 3 (2008):549-553,
https://hdl.handle.net/21.15107/rcub_vinar_3401 .

TY  - JOUR
AU  - Volceanov, E.
AU  - Plapcianu, C.
AU  - Kuncser, V.
AU  - Volceanov, A.
AU  - Matović, Branko
AU  - Motoc, S.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6752
AB  - In the last years the ternary stabilized zirconia ceramics have attracted a considerable attention as a source of materials for structural ceramics. In present paper, the simultaneous influence of Eu3+ and Y3+ cations on zirconia powders (obtained by co-precipitation of aqueous salts solutions) on stabilization process in conjunction with the structural characteristics was investigated. A conventional sintering method (in electric furnace) at 1350 degrees C temperature range was applied. SEM+EDAX and XPS (X-ray Photoelectron Spectroscopic) analysis were performed. The Eu3+ Mossbauer parameters: isomer shift and quadrupole splitting have been obtained for 21.6 keV radiation of Eu-151 are in good agreement with the XPS and XRD-obtained crystallographic data of the studied compositions.
T2  - Journal of Optoelectronics and Advanced Materials
T1  - Eu-151-Mossbauer spectroscopic study on ceramics beloging to ZrO2-Eu2O3-Y2O3 system
VL  - 10
IS  - 4
SP  - 891
EP  - 895
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6752
ER  - 

@article{
author = "Volceanov, E. and Plapcianu, C. and Kuncser, V. and Volceanov, A. and Matović, Branko and Motoc, S.",
year = "2008",
abstract = "In the last years the ternary stabilized zirconia ceramics have attracted a considerable attention as a source of materials for structural ceramics. In present paper, the simultaneous influence of Eu3+ and Y3+ cations on zirconia powders (obtained by co-precipitation of aqueous salts solutions) on stabilization process in conjunction with the structural characteristics was investigated. A conventional sintering method (in electric furnace) at 1350 degrees C temperature range was applied. SEM+EDAX and XPS (X-ray Photoelectron Spectroscopic) analysis were performed. The Eu3+ Mossbauer parameters: isomer shift and quadrupole splitting have been obtained for 21.6 keV radiation of Eu-151 are in good agreement with the XPS and XRD-obtained crystallographic data of the studied compositions.",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Eu-151-Mossbauer spectroscopic study on ceramics beloging to ZrO2-Eu2O3-Y2O3 system",
volume = "10",
number = "4",
pages = "891-895",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6752"
}

Volceanov, E., Plapcianu, C., Kuncser, V., Volceanov, A., Matović, B.,& Motoc, S.. (2008). Eu-151-Mossbauer spectroscopic study on ceramics beloging to ZrO2-Eu2O3-Y2O3 system. in Journal of Optoelectronics and Advanced Materials, 10(4), 891-895.
https://hdl.handle.net/21.15107/rcub_vinar_6752

Volceanov E, Plapcianu C, Kuncser V, Volceanov A, Matović B, Motoc S. Eu-151-Mossbauer spectroscopic study on ceramics beloging to ZrO2-Eu2O3-Y2O3 system. in Journal of Optoelectronics and Advanced Materials. 2008;10(4):891-895.
https://hdl.handle.net/21.15107/rcub_vinar_6752 .

Volceanov, E., Plapcianu, C., Kuncser, V., Volceanov, A., Matović, Branko, Motoc, S., "Eu-151-Mossbauer spectroscopic study on ceramics beloging to ZrO2-Eu2O3-Y2O3 system" in Journal of Optoelectronics and Advanced Materials, 10, no. 4 (2008):891-895,
https://hdl.handle.net/21.15107/rcub_vinar_6752 .

TY  - JOUR
AU  - Volceanov, E.
AU  - Neagu, R.
AU  - Volceanov, A.
AU  - Plapcianu, C.
AU  - Matović, Branko
AU  - Niciu, H.
AU  - Valsangiacom, C.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3602
AB  - In present work, complex mixtures were designed based on fused SiO(2), beta-SiC and different oxide additives. The addition of Al(2)O(3) and mulite - 3Al(2)O(3) 2SiO(2) influence was investigated in order to obtain high temperature strength, thermal shock resistant and corrosion resistant composites. Thermal treatment was conducted in conventionally electric furnace in air and in argon respectively, in the 800-1250 degrees C temperature range. Sintered composites were characterised by bulk density, open porosity, and thermal shock resistance and thermal expansion measurements. The crystalline phase evolution in conjunction with each heat curing procedure was analysed by X-ray diffraction and FTIR spectrometry. Microstructure investigation of sintered samples was carried using scanning and transmission electron microscopy. The relationship between the FTIR spectra and structure of the powders and sintered composites was explained.
T2  - Journal of Optoelectronics and Advanced Materials
T1  - Sintered fused silica based composites
VL  - 10
IS  - 12
SP  - 3225
EP  - 3228
UR  - https://hdl.handle.net/21.15107/rcub_vinar_3602
ER  - 

@article{
author = "Volceanov, E. and Neagu, R. and Volceanov, A. and Plapcianu, C. and Matović, Branko and Niciu, H. and Valsangiacom, C.",
year = "2008",
abstract = "In present work, complex mixtures were designed based on fused SiO(2), beta-SiC and different oxide additives. The addition of Al(2)O(3) and mulite - 3Al(2)O(3) 2SiO(2) influence was investigated in order to obtain high temperature strength, thermal shock resistant and corrosion resistant composites. Thermal treatment was conducted in conventionally electric furnace in air and in argon respectively, in the 800-1250 degrees C temperature range. Sintered composites were characterised by bulk density, open porosity, and thermal shock resistance and thermal expansion measurements. The crystalline phase evolution in conjunction with each heat curing procedure was analysed by X-ray diffraction and FTIR spectrometry. Microstructure investigation of sintered samples was carried using scanning and transmission electron microscopy. The relationship between the FTIR spectra and structure of the powders and sintered composites was explained.",
journal = "Journal of Optoelectronics and Advanced Materials",
title = "Sintered fused silica based composites",
volume = "10",
number = "12",
pages = "3225-3228",
url = "https://hdl.handle.net/21.15107/rcub_vinar_3602"
}

Volceanov, E., Neagu, R., Volceanov, A., Plapcianu, C., Matović, B., Niciu, H.,& Valsangiacom, C.. (2008). Sintered fused silica based composites. in Journal of Optoelectronics and Advanced Materials, 10(12), 3225-3228.
https://hdl.handle.net/21.15107/rcub_vinar_3602

Volceanov E, Neagu R, Volceanov A, Plapcianu C, Matović B, Niciu H, Valsangiacom C. Sintered fused silica based composites. in Journal of Optoelectronics and Advanced Materials. 2008;10(12):3225-3228.
https://hdl.handle.net/21.15107/rcub_vinar_3602 .

Volceanov, E., Neagu, R., Volceanov, A., Plapcianu, C., Matović, Branko, Niciu, H., Valsangiacom, C., "Sintered fused silica based composites" in Journal of Optoelectronics and Advanced Materials, 10, no. 12 (2008):3225-3228,
https://hdl.handle.net/21.15107/rcub_vinar_3602 .